Development of a wide band TEM-based Bethe Hole coupler using ridge gap waveguide technology

A 20 dB Bethe Hole coupler is designed and fabricated using ridge gap waveguide technology for operation at the Ku band. The use of ridge gap waveguide concept makes an opportunity to develop a low loss and wideband directional coupler because of supporting TEM wave propagation in air region. The si...

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Bibliographic Details
Published in:International journal of electronics and communications 2019-11, Vol.111, p.152933, Article 152933
Main Authors: Nematpour, Efat, Ostovarzadeh, Mohamad Hossein, Razavi, Seyed Ali
Format: Article
Language:English
Subjects:
Bethe hole
Coaxial probe
Ridge gap waveguide
TEM
Wideband
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Summary:A 20 dB Bethe Hole coupler is designed and fabricated using ridge gap waveguide technology for operation at the Ku band. The use of ridge gap waveguide concept makes an opportunity to develop a low loss and wideband directional coupler because of supporting TEM wave propagation in air region. The simulation results show a very flat −20 dB coupling coefficient response, higher than 20 dB isolation and proper impedance matching over a wide frequency range which are in agreement with the measurement results.
ISSN:1434-8411
1618-0399
DOI:10.1016/j.aeue.2019.152933